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Borrowings - other borrowings (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Jun. 30, 2020
Components of long-term debt
Convertible notes	$ 270,709	$ 265,878
Other long-term debt	1,905	2,120
Total	272,614	267,998
Less current portion of long-term debt	(947)	(926)
Long-term portion of debt	271,667	267,072
1.25% Convertible Senior Notes Due 2022
Components of long-term debt
Principal amount	287,500	287,500
Unamortized discount	(14,832)	(19,075)
Unamortized debt issuance costs	$ (1,959)	$ (2,547)

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Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after accumulated amortization, of debt discount.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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